UXXXX - Network Communication Diagnostic Trouble Code (DTC)

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UXXXX - NETWORK COMMUNICATION DIAGNOSTIC TROUBLE CODE (DTC)

Description:	Powertrain related DTC from another module.
Possible Causes:
Diagnostic Aids:
Application	Key On Engine Off	Key On Engine Running	Continuous Memory
All	For U DTC(s) received during self-test of a module other than the powertrain control module (PCM), refer to PINPOINT TEST QT: STEP 1: POWERTRAIN CONTROL MODULE (PCM) QUICK TEST .

NOTE: 'X' equals any number 0 through 9 or letter A through F.

NOTE: Reprogram or update the calibration. Check for other DTCs and diagnose those first. Make sure to check for aftermarket performance products before installing a new PCM. Clear the DTCs, repeat the self-test. If the DTC is retrieved again, install a new PCM. Refer toFLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) .

NOTE: DTC P1000 is ignored in the key on engine off (KOEO) and key on engine running (KOER) self-tests. Disregard DTC P1000 and continue as directed.